GHSA-2QQV-8873-JP7P
Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-08 15:31In the Linux kernel, the following vulnerability has been resolved:
usb: legacy: ncm: Fix NPE in gncm_bind
Commit 56a512a9b410 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind") deferred the allocation of the net_device. This change leads to a NULL pointer dereference in the legacy NCM driver as it attempts to access the net_device before it's fully instantiated.
Store the provided qmult, host_addr, and dev_addr into the struct ncm_opts->net_opts during gncm_bind(). These values will be properly applied to the net_device when it is allocated and configured later in the binding process by the NCM function driver.
{
"affected": [],
"aliases": [
"CVE-2026-43422"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-08T15:16:54Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: legacy: ncm: Fix NPE in gncm_bind\n\nCommit 56a512a9b410 (\"usb: gadget: f_ncm: align net_device lifecycle\nwith bind/unbind\") deferred the allocation of the net_device. This\nchange leads to a NULL pointer dereference in the legacy NCM driver as\nit attempts to access the net_device before it\u0027s fully instantiated.\n\nStore the provided qmult, host_addr, and dev_addr into the struct\nncm_opts-\u003enet_opts during gncm_bind(). These values will be properly\napplied to the net_device when it is allocated and configured later in\nthe binding process by the NCM function driver.",
"id": "GHSA-2qqv-8873-jp7p",
"modified": "2026-05-08T15:31:28Z",
"published": "2026-05-08T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43422"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b23e86a3a15803c3dcb24701285f73e65099fdf9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/be5738d19bed244ede84da45bc45395bcb1d99e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fde0634ad9856b3943a2d1a8cc8de174a63ac840"
}
],
"schema_version": "1.4.0",
"severity": []
}
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